全文获取类型
收费全文 | 3311篇 |
免费 | 127篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 116篇 |
儿科学 | 142篇 |
妇产科学 | 112篇 |
基础医学 | 214篇 |
口腔科学 | 208篇 |
临床医学 | 286篇 |
内科学 | 591篇 |
皮肤病学 | 23篇 |
神经病学 | 190篇 |
特种医学 | 262篇 |
外科学 | 786篇 |
综合类 | 56篇 |
一般理论 | 1篇 |
预防医学 | 95篇 |
眼科学 | 67篇 |
药学 | 133篇 |
中国医学 | 6篇 |
肿瘤学 | 168篇 |
出版年
2023年 | 29篇 |
2022年 | 50篇 |
2021年 | 88篇 |
2020年 | 53篇 |
2019年 | 63篇 |
2018年 | 111篇 |
2017年 | 84篇 |
2016年 | 119篇 |
2015年 | 110篇 |
2014年 | 169篇 |
2013年 | 180篇 |
2012年 | 226篇 |
2011年 | 210篇 |
2010年 | 112篇 |
2009年 | 106篇 |
2008年 | 197篇 |
2007年 | 250篇 |
2006年 | 218篇 |
2005年 | 207篇 |
2004年 | 209篇 |
2003年 | 159篇 |
2002年 | 139篇 |
2001年 | 77篇 |
2000年 | 58篇 |
1999年 | 56篇 |
1998年 | 24篇 |
1997年 | 11篇 |
1996年 | 18篇 |
1995年 | 9篇 |
1994年 | 5篇 |
1992年 | 18篇 |
1991年 | 7篇 |
1990年 | 5篇 |
1989年 | 3篇 |
1988年 | 8篇 |
1987年 | 5篇 |
1985年 | 4篇 |
1981年 | 3篇 |
1979年 | 5篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1976年 | 3篇 |
1974年 | 3篇 |
1972年 | 4篇 |
1970年 | 2篇 |
1969年 | 4篇 |
1968年 | 2篇 |
1967年 | 2篇 |
1966年 | 4篇 |
1955年 | 2篇 |
排序方式: 共有3456条查询结果,搜索用时 15 毫秒
1.
2.
3.
T. Erhan Cosan Baki Adapinar Hamdi Cakli M. Kezban Gurbuz 《European archives of oto-rhino-laryngology》2006,263(4):327-330
The case of a child injured by a knitting needle penetrating transorbitally and intracranially, resulting in carotid cavernous fistula and pontine injury, is reported. After receiving medical and endovascular treatment, the only remaining abnormal neurological manifestation was right peripheral facial nerve palsy. The clinical sequences of events and the demonstration of a pontine lesion leading to peripheral facial palsy are presented. Facial nuclear injury with a penetrating trauma is an extremely rare condition. It is important to identify the anatomical regions injured in penetrating traumas. The lesions must be identified by computerized tomography, magnetic resonance imaging, clinical and laboratory investigation. 相似文献
4.
Alan A Arslan Anne Zeleniuch-Jacquotte Annekatrin Lukanova Yelena Afanasyeva Joseph Katz Mortimer Levitz Giuseppe Del Priore Paolo Toniolo 《Cancer epidemiology, biomarkers & prevention》2006,15(11):2123-2130
Epidemiologic evidence suggests that a full-term pregnancy may affect maternal risk of breast cancer later in life. The objective of this cross-sectional study was to compare circulating levels of maternal hormones affecting breast differentiation (human chorionic gonadotropin and prolactin) and proliferation [alpha-fetoprotein, insulin-like growth factor I (IGF-I), and estradiol] between women at a low to moderate risk (Asians and Hispanics), as compared with women at a high risk for breast cancer (Caucasians and African-Americans). Between May 2002 and December 2004, a total of 586 pregnant women were approached during a routine prenatal visit. Among them, 450 women (206 Caucasian, 126 Asian, 88 Hispanic, and 30 African-American) met the inclusion criteria and signed the informed consent. Only singleton pregnancies were considered. Blood samples were drawn during the second trimester of pregnancy. Laboratory analyses were done using the IMMULITE 2000 immunoassay system. Gestational age standardized mean levels of estradiol, IGF-I, and prolactin were significantly higher in Hispanic women compared with Caucasian women. Mean concentration of IGF-I was significantly higher in African-American women compared with Caucasian and Asian women. No significant differences in pregnancy hormone levels were observed between Caucasian and Asian (predominantly second-generation Chinese) women in this study. Irrespective of ethnicity, women who had their first pregnancy had substantially higher mean levels of alpha-fetoprotein, human chorionic gonadotropin, estradiol, and prolactin compared with women who previously had at least one full-term pregnancy. These data suggest that circulating pregnancy hormone levels may explain some of the ethnic differences in breast cancer risk. 相似文献
5.
Sabri Acarturk Emrah Arslan Ferit Demirkan Sakir Unal 《Journal of plastic, reconstructive & aesthetic surgery》2006,59(4):409-16; discussion 417-8
Severe middle vault deformity with disturbed nasal form and function is one of the most challenging procedures to correct in a secondary rhinoplasty. Reconstructing the deformity with autologous septal cartilage would be the primary choice of most surgeons, if it were always available. However in certain cases the lack of a sufficient quantity of autologous cartilage has forced surgeons to explore other viable options. This paper discusses our experience with the combined use of spreader and dorsal onlay grafts from various materials in the reconstruction of severe middle vault deformity in 110 patients. In follow up, (between 6 and 42 months; mean 21 months) all patients were noted to have improved in both aesthetics and function with no major complications noted. In summary, this study proposes that any engrafting material can be used safely when the proper surgical principals and technique are employed. 相似文献
6.
7.
Erhan Firatli Tahsin Ünal Nurcin Saka Utku Onan Ahmet Sivas Hikmet Öz 《Journal of clinical periodontology》1994,21(8):565-568
Abstract Fructosamine assay, which is used in diagnosing and monitoring diabetic patients, is compared with the hemoglobin and plasma glucose assays in children and adolescent insulin-dependent diabetes mellitus patients. We demonstrated that the gingival index scores were correlated with fructosamine values in insulin-dependent diabetes mellitus patients but not in non-diabetic controls. We also found that there was no correlation between gingivitis scores and fasting plasma glucose and HbAlc values. Periodontitis was found to be rare in diabetic children and adolescents. 相似文献
8.
9.
10.